Machine-clamp.



PAT'ENTED OCT. 25, 1904.

E. D.` TUCKER. MACHINE CLAMP.

APPLIOATION FILED JULY 28, 1900.

N0 MODEL.

No. 773,172. Patented October 25, 1904.

UNTTED STATES PATENT Trice.-

EDWIN D; TUCKER, OF NEW YORK, N. Y., ASSIGNOR TO ROBERT HOE, OF NEW YORK, N. Y.

MACHINE-CLAMP.

SPECIFICATION forming part of Letters Patent No.7773,172,.dated October 25, 1904.

Application ined my 28,1900. serial No. 25,135. (No model.)

T @ZZ 70h07 t may COUCWW part of this specification, and in which like 50 Be it known that I, EDWIN D. TUCKER, a characters of referenceindicate thesame parts, citizen of the United States, residing at New Figure l is a plan view of a part of the bed York, county of New York, and State of New of a planing-machine, said bed being provided York, have invented certain new and useful with clamps constructed in accordance with Improvements in Machine-Clamps, fully dethe invention. Fig. 2 is a longitudinal vcr- 55 scribed and represented in the following specitical sectional view on the line 2 2 of Fig. l.Y iication and the accompanying drawings,form Fig. 3 is a cross-section on the line 3 3 of Fig.

ing a part of the same. 1. Fig. 4C is a similar section on the line 4 4 IO This invention relates to certain improveof Fig. l. Fig. 5 is a detail view illustrating ments in work-clamps, and more particularly the construction of the locking devices. to such clamps as are used for holding' the VReferring to the drawings, which illustrate work on the reciprocating beds of rotary planone embodiment of the invention, l represents ing-machines. a portion of the bed of an ordinary rotary I5 In many planing-machines the table is proplaning-machine. This bed is to be mounted vided with a long central groove in which and reciprocated in any usual manner. Inasworks a block which is connected, by means much, however, as the construction for mountof a screw, to the fore clamp of the machine, ing and reciprocating the bed is common and the block being caused to jam in the groove well known and has no connection with the 2O by tightening the screw, thus locking the present invention, it is not illustrated. The

clamp in position. The cooperating clamp is bed is provided with work-clamps 2 and 3. 70 adjusted toward and from the fore clamp inY The work-clamp 2, which is the fore clamp, various ways, but usually by means of a screw is ad justably Vmounted on the bed, said clamp which engages a nut stationarily mounted at being provided with guiding projections 5,

25 some point in the groove before referred to. which take over the edges of the bed and en- VVith this construction it is necessary in the gage grooves 6 formed therein. Suitable 75 iirst place to employ a wrench to loosen the means are provided for locking this clamp 2 jamming-bolt of the fore clamp whenever it in adjusted position, which means may be is desired to adjust the same, and, further, the varied widely in construction. Preferably,

30 groove iills up with the shavings produced by however, they will be arranged as shown, so

the cutter and becomes clogged. It is freas to leave the top of the bed free. Prefer- 8O quently necessary, therefore, to stop and clear ably, furthermore, these locking devices will out the central groove before-either clamp can be soarranged as to lock the clamp at sucbe adjusted. cessive separated points along the bed, the

3 5 It is the object of this invention to so arconstruction being such that a rough adjustrange work-clamps of planing-machines and mentis given byshiftingthe fore clamp, means other analogous machines as to make it unnecbeing provided for moving the cooperating essary to employ a wrench in their adjustclamp 3 to give the fine adjustment. While, ment and, furthermore, to produce a construcas has been indicated, the locking devices may 40 tion which will avoid the clogging in the be widely varied in construction in the form groove, thereby producing a clamp which can shown, one of the edges of the work-table is be readily and quickly adjusted. provided with a series of perforations 7, said Vith this and other objects in view the inperforations being preferably located in one vention consists in certain constructions and of the grooves 6. Arranged to cooperate with 45 in certain parts, improvements, and combinaany one of these perforations 7 is a reciprotions, as will bev hereinafter fully described cating pin 8, said pin being located in a perand then specifically pointed out in the claims foration in one of the projections 5. The pin hereunto appended. 8 may be operated in any desired manner. In

Referring to the drawings,'which form a the construction shown its outer end is provided with a collar 9, which is engaged by a t'ork on the end ot' a lever 10, said lever being pivoted on a pin 11, which is mounted in ears 12, extending from one oi' the corners of the clamp. A spring 13 is arranged to bear against the under side of the lever 10, and thus normally hold the pin in engagement with one of the perforations. lVhen it is desired to adjust the clamp, it is only necessary to press down the outer end of the lever 1() and slip the clamp along', releasing the lever when the clamp is opposite the perforation which is nearest the point where it is desired to adjust the clamp.

The cooperating work-clamp 3 may be adjusted in any suitable or desired manner. Preferably, however, the table will be provided with an opening 14, in which is located a threaded block 15, said block being secured to the clamp 3 by means of a screw 16 or in any other desired manner. The threaded block or nut 15 is engaged by a screw 17, said screw being suitably mounted in the bed. In the construction shown a bearing 19, secured to the bed by screws Q0, is provided, through which the outer end of the screw 17 passes, and mounted on the screw is a hand-wheel 21, by which it is operated. In order that the opening in which the block 15 moves may not become clogged, the clamp has connected to it a shield which covers said opening. Said shield may be variously constructed. As shown, however, it consists of two plates 2l and 2Q, said plates being secured to the threaded block 15 by means of screws or in any other suitable manner and being preferably arranged to work in recesses 23 Qa, formed in the surface of the bed. The plates 2l and 22 preferably have their forward edges beveled, as indicated at 25 2G, s0 that they will automatically operate to clear the recesses from any shavings or chips which may become deposited therein.

As has been indicated in the specification, the details of construction by which the invention is carried into effec may be varied. The invention is not, therefore, to be limited to the precise construction which has been before described.

vWhat is claimed is# 1. The combination with a work-carrying bed Afor planers and analogous machines having guiding-grooves along its edges, of a workclamp having guides engaging both grooves, aspring-controlled locking-pin, means located in the groove with which the pin cooperates, a cooperating clamp, and means for adjusting it toward and away from the other clamp, substantially as described.

2. The combination with a work-carrying bed for planers and analogous machines' having grooves along' its edges and a series of pretorations in one of the grooves, of a work-clamp having' guides which engage both grooves, a locking-pin extending through one ot' the projections and arranged to engage any one of the perforations, a cooperating clamp, and means for adjusting it toward and away from the other clamp, substantially as described.

3. The combination with a work-carrying bed for planers and analogous machines having grooves in its edges and a series of perfor-ations arranged in one of the grooves, ot' a work-clamp mounted on the bed and having guides engaging both grooves, a locking-pin extending through one of the projections, a spring-controlled handle for operating the pin, a cooperating clamp, and means for adjusting it toward and away from the other` clamp, substantially as described.

4. The combination with a work-carrying bed having an opening, of a work clamp mounted thereon, means located in the opening in the bed for adjusting the clamp, a shield moving with the clamp serving to close the' opening in the bed, a cooperating clamp, and means for adjusting it toward and away from the other clamp, substantially as described.

5. The combination with a work-carrying bed having an opening, of a work-clamp, means located in the opening in the bed for adjusting the clamp, a shield moving with the clamp and working in a recess in the bed, said shield being arranged to cover the opening' in the bed, a cooperating clamp, and means for adjusting it toward and away from the other clamp, substantially as described.

6. The combination with a work-carrying bed having an opening, of a clamp mounted thereon, a nut connected to the clamp and working in the opening, a screw for adjusting the nut and clamp, plates connected to each side of the nut and forming a shield, said plates working in recesses in the bed, -a cooperating clamp, and means for adjusting' it toward and away from the other clamp, substantially as described.

7. The combination with a work-carrying bed having an opening, of a clamp mounted thereon, a nut connected to the clamp and working in the opening, a screw for adjusting the nut and clamp, plates connected to cach side of the nut and forming ashield, said plates working in recesses in the bed and having beveled edges, a cooperating clamp, and means for adjusting it toward and away from the other clamp, substantially as described.

8. rlhe combination with a work-carrying bed, of a work clamp adjustably mounted thereon, means cooperating with the edges of the bed for locking the clamp to the bed, a coopera-ting clamp, means for adjusting the clamp located in an opening in the bed, and a shield moving with the clamp and working in a recess in the bed, said shield being arranged to cover the opening in the bed, substantially as described.

9. rlhe combination with a work-carrying bed, o't' a work clamp adjustably mounted IOO thereon, means coperating with the edges of the bed for locking the clamp to the bed, a co-` operating clamp, a nut connected to the clamp and Workingin an opening in the bed, a screw for adjusting the nut and clamp, and plates connected to each side of the nut forming a shield, said plates Working in recesses in the bed and being arranged to cover the opening in which the nut is located, substantially as described.

10. The combination with awork-carrying bed having a series of holes arranged along its length, of a Work-clamp adjustably mounted thereon, a locking device carried by the clamp and arranged to engage any one of the holes, a cooperating clamp, a nut connected to the clamp and Working in an vopening in the bed, a screw for adjusting the nut and clamp, and plates connected to each side of the nut and forming a shield which covers the opening, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of ltWo subscribing witnesses.

EDWIN D. TUCKER. Witnesses:

F. W. H. CRANE, S. RoEHM. 

